Hi Zemledelec,
your project Openglobus looks very promising! i just started playing around with it. 
What I currently miss:
- Center view again (elevation + azimuth) with an icon like the zoom icons.
- Markers with option to draw line to the ground, if they are in a certain height.
- Layerswitcher and more tools for interaction already build in (like in Leaflet)
- Zooming is somehow “slow”, especially on smartphone (should drop frames to keep timing if CPU is too slow)
But I am very pleased by Openglobus’ speed and feeling! Even on the smartphone zooming and changing elevation angle with two fingers is very intuitive.
Best regards,
Stefan